Crosslinked chitin derivatives
Patent 4493928 Issued on January 15, 1985. Estimated Expiration Date: 
June 22, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 22, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2168375 3251824 Use of chitin derivatives in automobile products Polysaccharide polyols Emulsification method for the processing of kriel to produce protein, lipids and chitin Shaped material comprising denatured chitin and process for preparing same Patent #: 4308377 InventorAssigneeApplicationNo. 06/390832 filed on 06/22/1982US Classes:536/20, Chitin or derivative530/364, Separation, purification or synthesis530/369, Separation, purification or synthesis530/387.1, Immunoglobulin, antibody, or fragment thereof, other than immunoglobulin antibody, or fragment thereof that is conjugated or absorbed530/395, Glycoprotein, e.g., mucins proteoglycans, etc.530/415, Selective absorbtion, e.g., Ca phosphate sorbents, etc.530/416, Ion exchange530/417, Chromatography or by septum selective as to material, e.g., gel filtration, molecular sieve dialysis, etc.530/421Polymeric, e.g., polyethylene glycol, etc.ExaminersPrimary: Brown, Johnnie R.Attorney, Agent or FirmInternational ClassesB01J 20/24 (20060101)B01J 20/22 (20060101) B01D 71/08 (20060101) B01D 71/00 (20060101) C08B 37/00 (20060101) C08B 37/08 (20060101) Foreign Application Priority Data1979-04-06 JPAbstractA novel crosslinked polymeric substance and a process for preparing the novel crosslinked polymeric substance are disclosed, the novel crosslinked polymeric substance being prepared from natural chitin or regenerated chitin and the polymeric substance having an amphoteric capability. |
| ||||||||||||||
